Compression grease-cup.



G. E. POWERS.

COMPRE8SION GREASE CUP.

APPLIOATION FILED FEB. 19, 1912.

1,061,323. Patented 13 I PZZ z 1 WITNESSES. INVENTOR,

aQMI

r' TENT OFFICE,

'oLAnEnonn-rownasf; or em t -mum, INDIANA.

' comrnassron GREASE-0UP. H

Specification of Iietten Patent.

Patented May 13, 1913.

Application med February 19, 1912. Serial No. 678,513.

To all whom it may concern:

Be it known that I, CLARENCE It. POWERS, a citizen of the United States, residing at Terre Haute, in the county of Vigo and State of Indiana, have invented anew and useful Improvement in Compression Grease- Cups, of which the following is a full speclfication.

My invention relates to that class of grease-cups, used to regulate and supply grease or other similar commodity, commonly called hard-lubricants, -to bearings; and the objects of the invention are; first, to provide a cup whereby any) of the well known hard lubricants may e uniformly and safely ap lied to the bearin s of a machine; secon to providev sue a device whereby a uniform and continuous pressure is applied tothe lubricantithereby maintaining a regulated feed from the cup to the bearing, to which it isattached; thlrd, to provide such a device which 'will be efiicient accurate in its feed, and convenlent to fill and operate andfourth, to provide such a device, which will by reason of its cul1ar structure save time, labor and la ricant. These ob ects I attain by means of the mechanism illustrated in the accompanying drawin s, in which 7 *igure 1, is a view of the exterior of the grease-cup.v Fig; 2, is a sectional view of the grease-cup, s owing the interior thereof. Similar letters of reference refer to similar parts throughout the several views. I

he letter (1 indicates a metallic cylinder which forms the body proper of the cup and which is closed at the upper end by means of a cap 1), into ral with tie c linder a. The

ca I) is sligitly bell-shapec and is perfo-.

rated and internally threaded at its center, for the purpose of receiving the hereinafter described shaft 0, and said cap is internally threaded to receive the threads of the shaft 0.

The lower edge of the cylinder a is externally threaded to receive the internal threads of the hereinafter described cap d. The letterd indicates a cap, consistin of a funnelshaped body 0 an octagonal jectin laterally from the up or edge of said unnel-shaped body e an adapted to engage a wrench, and an externally threaded stem g, pendent from said body e.

The stem 9 is perforated throughout along its axis, to provide a, feed-ventjfi', which'has fluid passage connection'with th e'interior of ans f, pm'

I the cylinder a and with the lubricant vent of the bearing to which the cup is attached,

respectively. The stem (1 is perforated transversely through one si e and said perforation is internally threaded to receive thecut-oil screw a, which is externally threaded and adapted to thread backward and forward within the feed-vent h of the stem 9, for the purpose of regulating the flow through said feed-vent. The inner wall of the feed-vent h is counter-sunk at a point opposite to the inner end of the cut-off screw 2', wherein the extreme end of the said cut-off screw may be seated, when it is desired to entirely out off or close said feedvent. The letter 0 indicates a shaft, threaded externally and adapted to engage and thread into the internal thread of the perforation in the cap I). A handle 7' is attached to the extreme upper end of the shaft 0, by means-ofthreads upon said shaft. A

'am-nutk, provided with laterally projectmg handles Z, is internally threade to fit the external threads of the shaft 0, and is adapted to seat itself upon the top of the cap I) and thereby set the shaft 0 and hold the same securely in any set position.

a The lower end of the shaft 0 is perforated along its axis and said perforatlon is internally threaded to receive the set-screw m. The letter 72 indicates an enlar ement of the lower end-ofthe shaft 0, sli ht y cup-shaped to fit snugly up against t lie curved inner wall of the cap b and which is perforated at its center to receive the set-screw m. The letter 12. indicates a metallic washer, which is supported upon the set-screw m and which is he agamst the lower face of the enlargement 7) of the shaft 0.

The letter n indicates a washer supported by the head of the set-screw m, unmediately below the washer n.

The letter 0 indicates a spiral s )ring, the extreme end coils 4 and 5, of which are fiattened to set flatly upon the washer a and the piston-leather .9, respectively.

A fiat metallic washer r, is grooved u on its outer edge, to receive the lower 'attoned coil of the spring 0. The said lower coil 5 of the spring 0, fits tightly into the 'grooveupon the edge of the washer r and is soldered thereto. The washer r is perforated at its center and internally threaded to receive the set-screw 6. A cup-like piston leathers, is perforated at its center to receive the set-screw 6, upon which it is dentally,

mounted, and the edge thereof is'turned down to fit the inner wall of the cylinder. a. A. fiat metallic washer t, is perforatedat its center to receive the set-screw 6 and the outer edge thereof fits snugly within the iston-leather s. The washer t is held up rmly against the under side of the pistonleather 8, by means of the set-screw 6. \Vhen so assembled the washers 1' and t, the piston-leather and set-screw .6, together form a piston member which serves to forcethe rease body downward, in the manner hereinafter set forth.

To fill my cup with grease or other similar lubricant, detach. the cap from the bearing to'which it is attached; loosen the jam-nut In, screw the shaft and the mechanism thereto attached to the top of the cylinder 0., thereby enlarging the interior of the grease-chamber a formed by the cylinder a, to its fullest capacit the cup is then filled to its fullest capacity, compressing the spring 0 as much as possible, in order that a l the grease in the cup. Tie cup is then replaced upon the hearing by means of the threaded stem 1 g, and the jam-nut k is set firmly upon the 1 top of the cap b. When so a justed the spring 0 will force 1 natural expansion of the the piston-leather a downward upon the body of ease within the cup and, incifeed-vent h, into the vent of the bearing.

When the spring 0 is fully expanded, the jam-nut k is loosened and the shaft 0 is screwed downward, until the spring 0 is a ain sufiiciently compressed upon the body of grease, the jam-nut k is reset, when the expansion of the spring will feed the grease through the feed-vent, until the grease-chamher is empty. In this manner the feed is regulated y the use of spring? of calculated strength, and the cup may e adjusted to feed slow or fast, as desired. A uniform feed is thus maintained at all times and the cup needs adjusting, only when the spring 0 is full ex anded or the cup empty.

Having escribed my invention, its structure, operation and advantages, what I'claim as new and useful and desire to secure by Letters Patent is 1. In a grease-cup, the combination of a cylinder having its upper end closed by a cap, integral therewith and havin an aperture at its center, and having its lower end threaded with a'threaded cap, ada ted to screw onto the-externally threade lower end of said cylinder and having a wrench ossible maybe placed .Withorce grease outward through the.

flange projecting laterally from the upper edge and an externally threaded stem pendent from the center thereof, a feed-vent extending axially through said stem, a cut-off screw movably mounted in said stem and ada ted to close said feed-vent, an externaly threaded shaft extending outwardly from the interior of said cylinder, throng '1 the upper ca) thereof and adapted to thread up'and down through said upper cap, a air of washers attached to the innor en of said shaft, means of attachlng the same, a s iral-spring having its upper coil clamped tween sa1d pair of washers, a washer having a grooved edge adapted to receive and be attached to the lower coil of said spring, a piston leather and supporting washer attached to said grooved-washer, means of attachin the same, a jam-nut threaded upon 'sai shaft and adapted to seat itself upon the upper cap and a handle attached to the outer end of said shaft, all substantially as shown and for the purpose set forth.

2. Ia n grease-cup, the combination of a cylinder, having its ower end screw threaded, and having the upper end closed by a cap, said cap having a threaded aperture in the center thereof, an externally threaded shaft, extendiu from the interior of said cylinder t-hroug said threaded aperture, a jam-nut upon said shaft, a handle upon the it per end of said shaft, a set-screw adapted to attach a air of washers to said shaft, a pair of metallic washers supported by said set-screw, a spiral-spring having its upper coil clam ed between said air of washers, a groove washer adapted to engage the lower coil of said spring and be fixed thereto, a piston leather and sup iorting washer attached to said grooved was 181, said piston leather being turned downward and a I ainst the inner wall of said cylinder and It apted to push all matter therein before it, an internally threaded cap adapted to close the lower end of said cylinder and having a wrench-flange projecting radially therefrom, an externally threaded stem integral .with and pendent from the body of said lower cap, a feed-vent extending through said stem, a cut-off screw adjustably mounted in the side of said stem and ada ted to close said feed-vent, all substantial y as shown and described and for the purpose set forth.

CLARENCE R. POWERS. 'Wit-nesses:

SYDNEY'B. DAVIS, Geo. M. DAVIS.

copies of thtipatont may be obtainod tor five cents each, addressing the "Commissioner of new, Washington, D. O. 

